Class Driver

java.lang.Object

Driver

public class Driver
extends java.lang.Object

This is the main class of the program. It provides a way to readBytes an Ext2 Filesystem image, based on the path that will be provided by the user, as a string.

Author:

Petros Soutzis, 2017-19

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.String	currentDir
private static Inode	inode
private static java.util.Stack<java.lang.String>	pathStack
private static boolean	running

Constructor Summary

Constructors

Constructor and Description
Driver()

Method Summary

Modifier and Type	Method and Description
private static void	getCommandAndExecute(java.lang.String input, int inodeSize, Superblock sBlock, GroupDescriptor groupDesc, Ext2File ext2) This method will divide the user's input into a command and a target path and execute the given command.
private static java.lang.String	getComputerName()
private static void	getCurrentPathName(java.lang.String[] pathArray) Method to get the current-path.
private static boolean	getInputYesNo() If the user enters anything else than Y/y or N/n, they will be prompted to re-enter their decision.
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

inode

private static Inode inode

currentDir

private static java.lang.String currentDir

pathStack

private static java.util.Stack<java.lang.String> pathStack

running

private static boolean running

Constructor Detail

Driver

public Driver()

Method Detail

getComputerName

private static java.lang.String getComputerName()

Returns:

An identifier for the computer that currently runs the program

getCurrentPathName

private static void getCurrentPathName(java.lang.String[] pathArray)

Method to get the current-path. Utilises a global stack and String.

Parameters:

pathArray - The array containing the path values (leaps)

getInputYesNo

private static boolean getInputYesNo()

If the user enters anything else than Y/y or N/n, they will be prompted to re-enter their decision.

Returns:

true if user enters Y/y, or false if user enters N/n.

getCommandAndExecute

private static void getCommandAndExecute(java.lang.String input,
                                         int inodeSize,
                                         Superblock sBlock,
                                         GroupDescriptor groupDesc,
                                         Ext2File ext2)
                                  throws java.io.IOException

This method will divide the user's input into a command and a target path and execute the given command.

Parameters:

input - The user's raw input

inodeSize - The size of any inode on this FS.

sBlock - The superblock of this FS.

groupDesc - The group descriptor of this FS.

ext2 - The Ext2File instance of the FS.

Throws:

java.io.IOException - This is not actually correct, the exception should be handled in Ext2File, but who cares.

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Throws:

java.io.IOException